Elevator



March 3, 1931. H. l.. HRBURG ELEVATOR 1928 8 Sheets-Sheet l Filed April 1e d/ W INVENTOR. BY I j c Match 3, 1931. H. L.. HARTBURG ELEVATOR Filed April 16, 1928 8 Sheets-Sheet 2 IM .Mqwll INVENTOR.

ATTORNEY;

`March 3, 1931. H. l.. HARTBURG ELEVATOR s' sheets-sheet 3 Filed April 16 1928 INVENTIY?. @Sw/51 Lowa/ 3 ATTORNEY March, 1931. H,. ,HARTBURG 1,794,456

ELEVATOR Filed April 16, 1928 8 Sheets-Sheet 4 x JIIIIIIIIIL l' 46 60 7 49| 6 n s I EVC /lo J7 March 3, 1931. H. L. HARTBURG ELEVATOR Filed April 16, 1928I 8 Sheets-Sheet 5 INVENTOR.

ATTORNEY.

March 3, 1931..l H, l.. HARTBURG ELEVATOR 8 Sheets-Sheet 6 Filed April 16 1928 March 3, 1931. H. l., HARTBURG ELEVATOR Filed April 16, 1928 8 Sheets-Sheet '7 March 3, 1931. f H, L. HARTBURG Y 1,794,456

ELEVATOR Filed April 16, 1928 8 Sheets-'Smet 8 I N VEN TOR.

Patented Mar. 3, 1931 Y HERMANLQHARTBURG, oFnENvER, COLORADO l ELnvA'roR Application mea April; is,

4lMy invention relatestoelevating means and particularly to'means adapted to receive material 'from a wagon, truck or -otherlreoeptacle `at-"a lower level 'and elevate same to a 'l 5 liigherlevel,asinto a railway ca r orinto a pile. Y

j-An object ofthe invention isto provide a novel elevating means of the character men-- tioned for receivingsugar beets dumped from a wagon or ltruck 'into the'elevatorand'for transferring'thebeetstoa railway :arorV beet pile. The invention T is, however, not

vlimited to sugar be`ets,'but may as well be used to elevate grain',v coal,*. sand,f gravel, etc. Sugar beetswill be takenv merely `asfanjexi5 ample inthe present specication.

vr'j An'otherobjeet of the invention is.to'pro, videa portable elevator of' the vcharacter men-v tioned. f' f f A further'fobject? is to providemeans which rv in the elevating step "provides compartments or ybins yfor the separation of y the beets 'into I- small groups to facilitate their elevation.;

A still further object is to separate dirt,

` 172-171of Figure 1 4.

fleaves, stems' and other foreign matterlfrom the beets before they are dumped into the. railway car -or pile. y

` Another object is to provide meansV for the return ofthe foreign matter `to thewagon originally carrying the 'beets kso 'that it may be 'weighed land deducted frointhe gross weight ofthe beetsfin*tlie'wag'on.v

Otherobjects reside in novel construction and in' novel arrangements 'of -parts,too. nu

inerous 'to mention, Vbutv whichwillfully apf pear in vthe course ofthe following descript0n-r-f 1 l* In the drawings, in which like: reference charaetersdesignate like parts inthe several f-views, '40 Figurer 1 is' a j si ofy an elevator embodying v present invention.y n

Figure 2 is a partly broken, side elevation similar to that shown 'in Figure 1, but looking inthe opposite direction; 'f

Figure 3 is a partly broken endview-.g Figure Llis a plan view of thefelevator shown in the 'aforementionedlviews- Figure 5 is an enlarged sectiontakenfon the line 5-25 of'Figure 1. t f Y de elevatiompartly broken, the yfeatures of theV 'f modification.

Y-anism of Figure 18.'v l.

FigureV v2Q 1s 'an enlarged section takenr` on- 192e. seal No. 270,490. l

the line 6 6 'ofFigure 1. Y

' Figure Zis an enlarged section taken on the line 7-`-7 of Figure 1.

Figure Sais anfenlarged, broken elevation of a corner ofthe elevating mechanism. A igure 9 isan'enlarged section of an idler 'for the elevator. I f Figure 10 is an enlarged, broken elevation of the driving'means for the elevator.

Figure 11 is an enlarged section taken on the line'l1-j11f-of Figure 8.

Figure 12 v is anenlarged sectiontalien on theline' 1212of Figure 11.

Figure 13 is an enlarged section taken on the line 13-13'of Figure 8.

Figure 14 is a broken sectional view of lmodified'mechanism for the elevator.

Figure 15 is an elevationof another such f 'Figure' 6 is an enlarged section taken on Figure 16'is a section taken on the line 'FigurelS is a broken eleva-tion of anotherI modified embodiment of the present inven-v tion- Figure 19 is an enlarged lview of a chain and belt, forming' part of the elevating mechthe line 20--20` of'FigurelS.

Figure 21 is an enlargedsection taken on the line 21-21 of Figure 18.

Figure 22 is a broken elevation of a modi! fied elevating mechanism also embodying the present invention.V

AFigure 23 is an enlarged section taken on the line 23-23 of Figure 22.

Referring more speoically to the drawings, the referencenumeral 5 desi gnates the supporting frame for the present elevating ineehanism. The frame is .supported on a tractor unit 6 and a'pivoted wheel 7 at op- Y The frame includes a superstruoture'S for the support 'ofthe various' elements of the ASO may thus be seen that the elevator has a three-point support, to Wit, the tractor, the

7 through the medium-ofabeltlt.v "The'dertails of the steerino' mechanism and of the 'l Figure 7. l

tractor will not be minutelv describedsince per se they form no partof the `presentinvention.

r Supported on the-fraine,-is..a feedhopper 15 having converging 'side' membersel that .are strengthened by channell members `17 Vfastened thereto. Abovetheconv-ergifi-i'g vside members are Wall members '18-and-1-9-.j2'i`he is hinged to the adjacent side member asat 20. The og'ipositevwall member '19 isi-fixed in an upright` position. Y

End members 21 of the hopper haveopenhereinafter more fully described. Y.

A plate 24 fastened beloii7 thehopperuand l tothe strengthening :members- 17 provides a track for the conve vor 23 .asbest shovv'nzin .l/ a Y Y m The conveyor consists the chains for the support of flights 27. .,The

shafts -are rounded .atvthe Vends fforconnection With the chains. n Y. Fastened on 'the shafts between the'tlights and the chains are cross .camanm's28'hanng vrollers 29 at theeitremities of thefarms YThe Yelevatinostep.

The chains pass around sprocket'wvheels32 and 33 at the top and at one of the lower corners of the elevator respectively.l Sha-ft 34 of the top roller carries a pulley 35 'driven by a belt 36, which ismediately driven by the belt 10 ofthe tractor unit through a'series of beltsand pulleys. Atthe lower side'opposite the Sprocket Wheel 33 the @hams am held.hnections ofy the apparatus have'not been miin position by the runways 30.

The rising stretch of the elevator' has sta- Y tionary Walls 31l on three. sides to keep beets from falling from the flights. 'The fourthV side of the compartments bet-Weenfthe iiights of parallel chains 125. Square shafts-26 areadisposedbetween Adjacent tlietop ofthe elevator,;the beets.

onA the flights are dumped into a hopper 43 that feeds onto al screening device 44 having grizzlyfrollers-45. 'The rollers 45, which are corrugated and circumferentially grooved to jostle dirt and foreign matter from the beets .and move the beets forward to a discharge chute 46, are drivenl by suitable means indicated generallyv by the number :47. 'Scraper bars-148 locatedon the underside-ofthe screening .device :are disposed to remove.. mud andy other matter from theegroovesiofuthe rollers.

Wall member 18, onthe-side of'theHhopper j fromavhich-thebeets are dumped into saine,

'The screening ldevice alsoi has larger cirvcumferentially-serrated l rollers P49 driveny .by

move thefloose lYm atter,.suchv as leaves, stems l -.and-the-l1ke, from-.the beets .onthescreen ings 22 for beets on fa traveling conveyor .'23

The fdirt, Ylea-ves,lsternsandall .other yfora. bottom opening thereof. This foreign ...matter is returned tor aitruckor wagon 53 Abelow-the .hopper 'by.' opening thevgate. In

practice it is returned -to the Wagon or truck that dumped thebeets into the elevator. A1 tare house "54eis lprovided `adj acent the -screen-44 and chute46, sothatta tareman can take 1.asanlpleof clean beets .-frointhe chute i A46S-*foreach-Wagon load of beets.

. .Theehutel 46. discharges the beets ontoxa shuttle conveyory -55 .of conventional. design, pivoted to the superstructure so; that vit may :be raised and loweredat itsouter-end for the '-'discharlge of beetsiat any: .desired .-elevation.

Theshuttleconveyor maybe opera-ted .by any suitable means. The adjusting means' for the shuttle conveyor-consists of. a cable .-56zthat zis vzfastened .to 5a. yoke-T57 atthe iouter end ofthe conveyor, that is Vpassed around -a -sheave I5.8, .'Y-and-Wound on'a drum 59.

Therunwa-ys 30 mayendat thetop roller, thus releasing the cam arms, 28, and allowingfthe flights Y to .assume position fpractif ,cally parallel 1With-the chains,--as sli-own .in

broken lines in Figure 1. The flights remain ein' the latter .position on .ther descent.- and l while .passing `through the lower portion of the feed hopper 15.

*The various belt-and-.pulleyandgear conthetareman. l I Y In the modified formfshowninfFigures .'14

v Each llighthas a shaft v63- carrying crank not inthe longitudinal axis as l88 at the corners ofy the elevator,

same shafts and rotatable therewith j are smaller sprockets` 841, 4which drivel chainsy 85 to 17, flights 62 lare pivoted at an edge and in the form hereinbefore described.

larms 641.l One end of the crank armsis fastened to the shaft and the other bears a roller 65. "The flightsare connected to chains'66 as before. u V

At the rising corner of thev elevator are disposed eccentric sprocket wheels 67 and 68 ythat arefastened together by links 69.l The 1' sprockets 68 are mounted on a shaft 68a, and

the sprockets 67 are mounted to revolve freely on bosses 67a, ywhich are secured to the frame by bolts 675 and through which the shaft 68a passes. Each link 69 has'one end pivoted toa sprocket 67 and its other end pivoted to the companion sprocket 68. The

s procketsl 68 are driven lby the chain 66 and the sprockets 67 meshwith the crank arm rollers, best shown in Figure 17. By this means the lightsare held in a Asubstantially horizontal position v'while the l'chains are rounding said corner, `and traveling up the ascending stretch.

An endless belt 70,'traveling onfpulleys- 7-1V 'and 72 and held against theredges of the *flights by idlers 7 3, is provided as before;l

Figure 15 merely shows another method'of linking the eccentric sprocketstogether.

Figures 18 to 21 show anelevator that is square in elevation instead oftriangular as hereinbefore.

The elevator means comprises parallel chains 71` asgbefore'having tubular shafts 75 between the chains. Flights consist of aplate 76 pivoted at one edge on one of the tubular shafts and at the other edge having brackets 77 carrying vrollersf78. I I

y An elastic belt 37 9, bolted to the tubular shafts as shown at 80, is woven above and below the shafts, 4as shown in Figure 19. 'llracks'V provided in angle mem- 81 for the chains are bers 82 on the frame.

'The belt 79 closes one sideof the compartments between the flights on the rising side, eliminating a station ary side for the compa-rtf ments. K f n The chains travely around large sprockets Orr-the carrying lugs 86. Idlers87 hold the V.stretch "of the chains adjacentv the belt 'parallel to same. An adjustable roller 88'is provided to take 'up' slack in eachchain; I

Plates 89 are provided at the sides'of the compartments on theascending side'to confine the beet-s between thellights. The lower ends ofthe plates ext-end around the corner of the elevator and are pointed as at 90. This pointed end 90 provides an incline to raise the rollers 78, as shown in Figure-18.l f j The chains are disposed inthe path of the rollers, so that the lugs 86 will engage the `rollers and aid 'in/supporting the flights during their ascent, also shown in Figure 18.

rl`he flights divide the beets von the rbelt into groups for their easy elevation.y

The rollers 78- are ahead of the pivoted edges with regard `to the direction of travel, f

While the flights are on thelower horizontal stretch of the elevator. After the flights pass an angle bar 91 on the upper horizontal stretch, they are allowed to-.hang from they belt, and on the descending side (not shown) of the elevator, the flights are' allowed to fall and lie against the belt, so that on the lower horizontal stretch the rollers :will be in ad- Vance as explained;

A screening device 92 shown in Figure 18 vconsists of oscillating lingersl 93 that advance 4,the beets valong the device andl separate foreign' matter therefrom. provided forthe'ingers, are oscillatedby any `Square shafts V94',

suitable means.

The elevatorshown in Figures-22 and 23 'operates ona different principle. The elevator is triangular in elevation, as before, vand enclosed in a housing 95. At each corner of the housing is a set of sprocket wheels r96. The sprocket wheels' may be operated by any 4suitable power means.V

Endless yparallel chains 97 arearrangedto travel around the sprocket wheels. Anend-V less belt 98 of flexible'materialis fastened between the chains 97 by'brackets99.

' Onthe ascending 'side of the belt isdis- ,posed an endless carrierL 100 having flights 101 at right-angles to the carrier. i .Shaft 102'fof the sprocketvfheelsl at the lower corner onthe ascending side carries a roller 103 for the carrier. vA roller 1,04 is provided near the topof the elevator alsofor the carrier. The latter roller-is driven fromV the uppermost sprocket wheels by a chain 105.

.A receivinghopper 106 is disposed along the horizontal stretch of the elevator for the reception of'beets and for their guidance to thel belt 98. A receiver v107 ijs provided adj acent the upper end of the carrierto receive the elevated beets. f

- In Figures 22 and 28the belt must travel tor by the wagon or motor truck 53,.preferV ably of a" type vthat Acanbe dumped'.

A- fblock. and tackle, indicatedv generally by the reference character 108, suspended from. thel superstructure vmay be used toftilt `the. vbody 109of the wagon or truck and dump the beetsfinto the receiving' hopper 15@4 Amevchanically driven drum '110 is providedto wind upthe'tackle to dump the body? 109.

- -Iii Figure 3tlie'ftruclr.bodyY is "shown as having a let-down side 112 for directing the beets to the hopper, the'hiiiged wall member 18 having beeirpreviously turned down.

`TheV beets lare then` elevated by any/.of 'the several :means herein described, to the chute 43, which directsthe beets' onto `the screening Y devicestl, `which separates foreign mattei' from thezbeets.

screen jostle the beets together and loosen thedirt: therefrom. YThe dirt drops between "thegrollersinto the dirt receiver 51. As described. leavesfstems, and other bulky foreign X matter is carriedtlirough' therollers by the llargetoothed wheels. into the dirt receiver. Y

:All dirta'iid otherforeign matteris returned to thefarmer by opening the-gate V52 *and discharging it intotliewvagon body 109 T120 "that .carried thebeets to the elevator.

' The wagon filled with beets' Vwas 'first pweigheid: and thereafter "the Wagon carrying thefforeigninatter is iiff'eighed and deducted .from-the gross weight, to give the netweight 325 4ofthe-beets."` Y i Y v From'the screening device 44, the beets are ff'edY doivn't-he chute '46 Vto the shuttle `conveyor 55 which feeds the beets intoa railway f cai'll vshown in Figure 3, or intoa desired VAtaieinan'takesasaniple"of each load of beets by'takiiig'clean beets passing rdown the Ychute 4G. The 'walkf60xis providedforthe f convenience of the ftalreman in getting this e 335 sample.

Y The tare house '54 hasa bench 114, for testing. l

Foi" travelingVthe cable 56 is wound onto Athe 'drum59ito fold the conveyor 55 against k340' the@ superstructure'. 'l

`'Bylineans ofthe tractor -unitfi the apparatus may be transported froniplaceto place. Thus. piles of beets may be'established in e different beet'- raising localities, or the beets 15 nnay be loaded into a railway car-thatA may be switched onto a siding in a beet 'raising locality. `l f Ilnste'adof being coinpelled to construct an f elevator inevery desired locality, "companies 1,?.50 "making sugar from sugar beets may use one or more of the present devices'and move theiii EAHaving thus'fully described my invention, what I Vclaim as new and desire'to secure by '55 LettersPatent of the United States is l. AnV apparatusfor the purpose set'foith including an elevator consisting of endless chains, independently rotatable rods extending between'and pivoted to the chai-ns, cranks on the ends of therods,f'flights on the io'ds; and

` propelling` means including leccentrically connected sprockets Aengaging said `cranks to project the flights into Vload.-sustaining-.posif tion. f e A Y F In elevator,= endlesselevating means -zontal stretch, means to hold the` flights ina `substantially horizontal -position fin going from the onestretch to the other, and means .the flights in a load-sustaining position until having a substantially*horizontal stretch an'd a rising stretch, independently movable flights on saidmeans,V the flights being in a substantially horizontal position in4` the-horito hold the flights in a substantially horizont'tal position on the .rising stretch. The serratedfandgroovedfrollers 45 of the vhaving a horizontal run and an ascending 3. An elevator including-an endless chain ruina sprocket wheel engaging the chain, iii- -dep'endentl-y movable Apivote'd flights on the chain, a `second sprocket wheel eccentric to the first spiocketwheel and adapted to hold S0 the flights in load-sustaining positions when .passing from one run tothe other. and means connecting the sprocket-'wheels whereby they I operate synchronously.

4. vAn elevator including an endless chain .S5 having a horizontal run and an ascending iuii, a spr cket iif'lieel'engaging thefchain, in-

dependently movable pivoted l-flightson the chain, a second sprocket wheel eccentric to the first sprocket wheel and adapted to .hold the ilights'in load-sustaining positions. when passing from one runto the othei-and links connecting thespiockct Wheels whereby one drives the other.

5. rin-elevator comprising an endless chain having a substantially horizontal load-receiving run and an ascending run. a sprocket Wheel at the junction between said runs7 in- 'dependently movable flights on the chain, and cranks on the flights cooperating 'with the'teeth of thesprocket wheelto maintain the flights in aload-sustaining position until theyv4 en tei' the ascending flight.

6. An elevato-r comprising an endless cha-in having -asubstantially horizontal load-receiving run and an ascending run7 independently movable flights on the chain. cranks on the ilightsLniea'ns at a juncture of tlie'runs cooperating with the cranks formaintaining 110 the latter reach the ascending run, and means for maintaining the flights in a f load-sustaining position, during their movement along the ascending run.y

17.*An elevator comprising endless chains having horizontal and rascending runs, a

sprocket wheel at'afjuncture of the runs engaging one ofthe chains, a second sprocket Wheel eccentric tothe first', links operatively `connectingthe sprocket wheels, independ- 2U ently movable pivotedV flights .on the chains, and4 cranks on the flights cooperating with the teeth of the second sprocket wheel to maintain the flights in a load-snstaining` position in traveling from oneriin to the-other.

8. An elevator comprising an en lless chain having a substantially horizontal load-receiving run and aiiascending run, movable flights on the chain, cranks on thelflights, means at ajiincture ofthe i'uns cooperating with the le cranks for maintaining the llights in a loadsustaining position until the latter reach the ascending run, and means cooperating with the lightsfor maintaining the flights in loadsustaining positions during at least a portion of their movement alongk the ascending run. j

9. In an elevator, a housing and endless elevating mechanism in the housing, comprising an endless chain having a substantially horizontal stretch, arising stretch .and a descending stretch, the housing being open along the rising stretch on the side facing the horizontal stretch, and pivoted flights on the chain, the flights projecting from the chain away from the adjacent portion ot the housing, on going trom the horizontal stretch to the rising stretch. l

l0. In an elevator, endless elevating mechanism comprising an endless chain having` a substantially horizontal stretch, a rising stretch and a descending stretch and pivoted nights on the chain, a housing forthe mechanism disposed to prevent beets from falling olf the `nights on three sides, the housing being open along the rising stretch on the side facing the horizontal stretch as the flights go trom the horizontal stretch to the rising stretch, and a hopper disposed to feed beets to the horizontal stretch and to receive beets dropping through the open side of the housing along the rising stretch.

1l. An elevator comprising endless chains having horizontal and ascending runs arranged at an actute angle to each other, a sprocket wheel at the juncture of the runs and engaging one of the chains, a sprocket wheel eccentric to the first sprocket Wheel,

links operatively connecting the sprocketV wheels whereby movement of the chain engaged wheel causes rotation of the second sprocket wheel, flights divided at spaced intervals on the chains for independent swinging movement, cranks on the flights cooperating with the teeth of ythe second sprocket wheel upon passage of the flights from the horizontal to ascending run,v and a support parallel to said ascending run and extending lupwardly from the sprocket wheels for at least a portion of said run, said support being positioned to engage and holdk the ights passing therealong against downward tilting movement. 7

l2. An elevator comprising endless chains having horizontal and ascending runs arringed at an acute angle to each other, a sprocket wheel at the juncture of the runs and engaging one of the chains, a sprocket wheel eccentric to the first sprocket wheel, links operatively connecting the sprocket wheels whereby movement of the chain engaged wheel causes krotation of the second sprocket wheel, liights divided at spaced intervals on f the chains for independent swinging movement, cranks on the flights cooperating with the teeth of the second sprocket wheel upon passage ot thel flights from the horizontal to ascendingrun, and a belt arranged parallel signature. c

HERMAN L. HARTBURG. c 

